/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2002 Xodnizel
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "mapinc.h"


void FP_FASTAPASS(1) IREMIRQHook(int a) {
	if (IRQa) {
		IRQCount -= a;
		if (IRQCount < -4) {
			X6502_IRQBegin(FCEU_IQEXT);
			IRQa = 0;
			IRQCount = 0xFFFF;
		}
	}
}

static DECLFW(Mapper65_write) {
	//if(A>=0x9000 && A<=0x9006)
	// printf("$%04x:$%02x, %d\n",A,V,scanline);
	switch (A) {
	//default: printf("$%04x:$%02x\n",A,V);
	//        break;
	case 0x8000: ROM_BANK8(0x8000, V); break;
	// case 0x9000:printf("$%04x:$%02x\n",A,V);MIRROR_SET2((V>>6)&1);break;
	case 0x9001: MIRROR_SET(V >> 7); break;
	case 0x9003: IRQa = V & 0x80; X6502_IRQEnd(FCEU_IQEXT); break;
	case 0x9004: IRQCount = IRQLatch; break;
	case 0x9005:          IRQLatch &= 0x00FF;
		IRQLatch |= V << 8;
		break;
	case 0x9006:          IRQLatch &= 0xFF00; IRQLatch |= V;
		break;
	case 0xB000: VROM_BANK1(0x0000, V); break;
	case 0xB001: VROM_BANK1(0x0400, V); break;
	case 0xB002: VROM_BANK1(0x0800, V); break;
	case 0xB003: VROM_BANK1(0x0C00, V); break;
	case 0xB004: VROM_BANK1(0x1000, V); break;
	case 0xB005: VROM_BANK1(0x1400, V); break;
	case 0xB006: VROM_BANK1(0x1800, V); break;
	case 0xB007: VROM_BANK1(0x1C00, V); break;
	case 0xa000: ROM_BANK8(0xA000, V); break;
	case 0xC000: ROM_BANK8(0xC000, V); break;
	}
	//MIRROR_SET2(1);
}

void Mapper65_init(void) {
	MapIRQHook = IREMIRQHook;
	SetWriteHandler(0x8000, 0xffff, Mapper65_write);
}
